well here's a thought, may not be a popular one but it is a thought. Perhaps a members contributions could make them eligble to vote as well. A contribution could either be in the form of a marketplace purchase or a donation to free stuff(made at some point, doesn't have to be a contiual thing)...this could be in addition to the rule of having had to spend X number of hours here and it's doubful that a person with 20 accounts would want to log in under a different user ID every time they made a purchase or what have you since that would get confusing and expensive...I guess the downfall is that the same person could just upload a peice of crap to free stuff under each username to establish their eligibility as well but I think they would be less likely, considering all the other check systems in place, fewer and fewer with multiple accounts would be able to meet all critera...